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Jason Simeon Genge - An introduction to Ethereum, the peer to peer computing framework based on the blockchain design. jas It describes how Ethereum relates to earlier blockchain technologies and how it represents an evolution of these technologies The Blockchain In 2008, Bitcoin was launched as a peer-to-peer database that relied on a new data structure referred to as the 'blockchain'. The blockchain consists of blocks, where each block holds a set of transactions and a reference to the previous block. This helped create a chain of all transactions that ever occurred. This data structure is replicated across all participating nodes so that every participant is aware of the transactions without having to get them from a central authority.

What is Ethereum? Ethereum is a decentralized blockchain platform that enables developers to build and deploy smart contracts and decentralized applications (dApps). Since its launch in 2015, Ethereum has stood out not only because of its blockchain technology but because of its unique potential to create applications that are both secure and transparent. Ethereum is also the platform behind Ether (ETH), the second-largest cryptocurrency by market capitalization after Bitcoin. However, what makes Ethereum truly revolutionary is its recent shift from a Proof of Work (PoW) to a Proof of Stake (PoS) consensus mechanism. In this article, we'll explore what this transition means for [what is Ethereum](https://coinpedia.org/beginners-guide/what-is-ethereum-the-comprehensive-guide/), how it differs from Bitcoin's mining process, and the long-term implications for the platform and its users.